Well, after 2 attempts taking my car to the Infiniti shop nearby, I have begun my headache.

Here's my issue - perhaps I'll upload a video, if possible.

When I stop my 2005 Coupe 6MT in gear, clutch in of course, it sounds perfect. When I take my foot off the clutch and leave it in neutral, there is a gargly-diesel sound to it. Worse yet, when I stop the car in neutral, and the clutch is out - the car sputters to a diesel-sounding stop.

The "master-technician" says that it's normal, and hit & miss on some OEM transmissions. He spoke with TechLine and Infiniti and they supported his prognosis. He says the fly wheel is stopping out of balance, there is no fix for it, and nothing is wrong with it.

The assistant service manager and I compared it to another 2004 6MT and the 2004 sounded perfect.

Anyone buy this, or validate it?

To me, it sounds like crap, but I have to go up to Infiniti Consumer Affairs to report it, in order to press further. There must be something that can be done, since they won't put a new trans in it - or fix the one that's there. The explanation I was given, was that I should just put in an after-market trans and that should fix it.

What a PITA! I have a headache.

 

I can guarantee you that neither my car, my truck.... nor any other vehicle that I have ever driven or previously owned has ever had a problem with this.

People wouldn't buy our cars if it was normal for them to do that.... unless it was because they offered them with the new TDI option.

 

Uh a unbalanced flywheel is a very very bad thing. It can cause a main bearing to go out. Take it to another dealership that guy is a idiot.

 

I would ask him if he had his fix of Crack today. There is NO way this is normal. An unbalanced ANYTHING is bad for a car. I would definatley call their bluff on this one.

 

Any Infiniti techs wanna get in on this? Especially in the Pacific NW...

 

Sure, I'll give this a shot. What I have seen/heard is that sometimes if you load the car (slow the car via the transmission instead of the brakes creating drag on the driveline) then push in the clutch quickly there will be a loud rattling noise, which I've seen all the g's i've driven do it, we've had numerous complaints on this and I've personally called tech line and they've told me its normal.

 

The situation I have here is when the car is not moving.

When the key is turned off - in gear and then in neutral.

Turned off in gear, with clutch in - sounds fine.
Turned off in NEUTRAL, with clutch out - sounds like a diesel engine sputtering to a stop.

At this point, clearly there is no load that could have been transferred to the brakes. Any ideas now?

 

These cars have a loud clutch. Assuming it's not dangerous the way yours is then just stop the engine with the clutch pressed in.

 

Normally, people would never notice this. I have a remote start on my 6MT, so I have to stop it in NEUTRAL if I want to use the features. This allows me to hear the difference between stopping in gear or in NEUTRAL.

 

Both normal: Pop the hood and have someone else work the ignition while you listen.

"diesel sputtering to a stop" is your timing chain, totally normal.

"gargly-diesel sound to it" throw-out bearing noise. The flywheel is dual-mass and the clutch is performance-oriented. This is normal for that combination.

Listen to it from outside the car while somebody else is at the controls and you'll see what I am talking about

FYI my 2005, 2006 G35 6MT coupes did both of these noises and my 2008 G37 does too. It is normal for nissan manual tranny cars.

 

normal bro...

 

Sounds like you're describing the usual, normal clutch chatter on these 6MTs... Mine does it, although not too loud and annoying...

 

This is some crazy crap. The sad thing is that we DID compare it to other 6MT G's and it was hit and miss. Most didn't do it, and some did. Since some didn't do it, I wanted mine to stop. Since it's considered NORMAL, even by us G-lovin' forum thread respondin' people... I guess I'm gonna have to deal with it.

I appreciate the support and answers.